METHOD FOR PRODUCTION OF ROAD BITUMEN Russian patent published in 2010 - IPC C10C3/04 

FIELD: construction.

SUBSTANCE: invention relates to method for production of bitumen by oxidation of carbon-containing mix oxidation by air oxygen in presence of catalyst, at the same time carbon-containing mix is represented by brown coal and dissolvent - oil product, which is previously exposed to thermal dissolution in presence of catalyst, such as ferric oxide, promoted with oxides of alternating valency metals at the ratio of coal: oil residue: catalyst 1:3:0.01 accordingly, temperature of 300-350°C, pressure of 2-5 atm., soaking time of 30 minutes with further separation of light fractions up to 350°C, and oxidation of high-temperature distillation residue with above specified catalyst at the temperature of 160°C for 2.5-3 hours to produce bitumen.

EFFECT: expansion of raw materials base for production of road bitumen with improved biocide properties.

2 cl, 4 tbl